ENGINE SPECIFICATIONS:
Bore4.325-inch
Stroke4.325-inch
CID508 cubic inches
Compression Ratio11.3:1
CamshaftLazer solid flat-tappet
Cam Duration266/271 degrees @ 0.050-inch tappet rise
Cam Lift0.652/0.657 inches
Rocker Ratio1.6:1
Lobe Separation106 degrees
Installed Centerline104 degrees
Top RingJE moly, 1/16-inch
Top Ring Gap0.020-inch
Second RingJE 1/16-inch
Second Ring Gap0.022-inch
Oil Ring3/16-inch
PistonJE reverse-dome, 0.990-inch pin
Gas Portslateral gas ports
Quench Clearance0.040-inch
Block'76 Buick
CrankshaftMoldex
RodsEagle 6.800-inch
Main Journalstandard Buick 3.250-inch
Rod Journal2.200-inch
Cylinder HeadsT/A Stage 2 Track Eliminator, ported
Peak Intake Flow355 cfm
Intake valve diameter2.250-inch
Exhaust valve diameter1.750-inch
Intake ManifoldT/A SP 2, ported
Carburetor1095 King Demon
HeaderT/A Performance 2 1/8-inch
IgnitionMSD
CoatingsCalico
Engine OilRoyal Purple
Oiling SystemScavenger
SOURCE
Automotive Machine & Performance